Finding the Fourth Proportional to 9,401.44, 12,973.82 and 5,209.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.44 : 12,973.82 = 5,209.60 : x
2. Step 2: Convert to fraction form
   9,401.44/12,973.82 = 5,209.60/x
3. Step 3: Cross multiply
   9,401.44x = 12,973.82 × 5,209.60
4. Step 4: Simplify right side
   9,401.44x = 67,588,412.67
5. Step 5: Solve for x
   x = 67,588,412.67/9,401.44
6. Step 6: Final answer
   x = 7,189.16